F or the first time in a long time, the news out of negotiations over Iran’s nuclear program, which took place Tuesday and Wednesday in Geneva, Switzerland, was extremely positive. In a statement at the close of talks Wednesday—the first ever such joint statement from the Iranian and P5+1 delegations (the permanent five UN Security Council members plus Germany)—European Union foreign-policy chief Catherine Ashton and Iranian Foreign Minister Mohammed Javad Zarif hailed “two days of substantive and forward looking negotiations.” “I've been doing this now for about two years, and I have never had such intense, detailed, straightforward, candid conversations with the Iranian delegation before,” said a senior U.S. official after the talks. “And I would say we are beginning that kind of negotiation to get to a place where, in fact, one can imagine that you could possibly have an agreement.” The official continued, “I think if you talk to any of the P5+1 members–and some of them have been...